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Date: Mon, 6 Feb 2012 16:41:59 +0000 (UTC)
From: "Thomas Neidhart (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (SANDBOX-388) Generic Type inference doesn't
 work in Eclipse
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    [ https://issues.apache.org/jira/browse/SANDBOX-388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201384#comment-13201384 ] 

Thomas Neidhart commented on SANDBOX-388:
-----------------------------------------

A rather ugly but working solution would be to cast the input graph to an unchecked DirectedGraph to circumvent type inference at all, like the following:

{code:title=FordFulkersonTest.java|borderStyle=solid}
@Test(expected=NullPointerException.class)
public void testNullGraphAndVertices()
{
  findMaxFlow( (DirectedGraph) null ).from( null ).to( null ).applyingFordFulkerson( new IntegerWeight() );
}
{code} 
                
> Generic Type inference doesn't work in Eclipse
> ----------------------------------------------
>
>                 Key: SANDBOX-388
>                 URL: https://issues.apache.org/jira/browse/SANDBOX-388
>             Project: Commons Sandbox
>          Issue Type: Bug
>          Components: Graph
>         Environment: Eclipse Java EE IDE for Web Developers.
> Version: Indigo Service Release 1
> Build id: 20110916-0149
>            Reporter: Simone Tripodi
>            Priority: Blocker
>
> {{Flow}} and {{MST}} EDSL is affected by generic type inference issue, it simply doesn't work in Eclipse. It works in IDEA, but in the Eclipse forum they reported that doesn't work if the code is compiled with Oracle JDK7.
> One of the reported error in Eclipse is:
> {quote}
> Type mismatch: cannot convert from SpanningTree<BaseLabeledVertex,BaseLabeledWeightedEdge<Double>,Object> to SpanningTree<BaseLabeledVertex,BaseLabeledWeightedEdge<Double>,Double>
> {quote}
> Looking for a solution

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